What is a Runtime Error & 9 Easy Ways to Fix It

Key Takeaways
  • Runtime errors occur during a program's execution, not during compiling. They often signal unresolved issues within the program, such as memory inadequacy or programming bugs, and are usually accompanied by an error message.
  • These errors can be due to poor programming, hardware issues, software conflicts, or malware. They manifest as messages with error codes and descriptions and can slow down the computer.
  • To fix runtime errors, try restarting your computer, closing other programs, updating the problematic program, or reinstalling specific components like Visual C++. Running virus scans and checking for corrupt files can also help.

Are you facing runtime errors that interrupt your tasks like programming, using Excel, or browsing the internet? Don’t worry. This guide will help you understand runtime errors, their common causes, and how to fix and prevent them. Let’s get your computer running smoothly again.

Runtime errors occur during a program’s execution and may indicate bugs or other unresolved issues. They often result from inadequate memory or missing resources. These errors typically display a message with a specific code and description, and you may notice your computer slowing down beforehand.

Here are some common causes of runtime errors:

  • Poor programming: If the program is poorly written, it can cause runtime errors. While software updates may fix these problems, if updates aren’t available, the errors will persist.
  • Aging or damaged hardware: Old or malfunctioning computer components like the hard drive or cooling fan can disrupt software function and cause runtime errors.
  • Interference from other software: Running many programs simultaneously might cause them to interfere with each other, especially on Windows PCs that share resources. Closing unused programs might help resolve these issues.
  • Viruses or malware: Although not the most common cause, hidden viruses or malware can cause runtime errors. Regular antivirus scans can help detect these issues.

A runtime error can be inconvenient, but don’t worry—here are some effective methods to resolve these errors and restore your program.

1. Restart your computer

Sometimes, a simple restart can work wonders. If your computer has been running for a long time and starts to slow down, it might be dealing with memory issues.

Restarting your computer closes all programs and processes, clearing the memory and other resources they are using. Once the computer restarts, try running the program again to see if the error is resolved.

2. Close other Programs

A runtime error might occur if there’s a conflict between your program and another one running simultaneously. Sometimes, another program might consume too much of the computer’s resources, leaving insufficient power and memory for your desired program.

By closing programs you’re not actively using, you free up resources for the program experiencing the runtime error. After closing unnecessary applications, try opening the problematic program again to see if the error persists.

3. Update the Program

Program developers often release updates to fix bugs and improve performance. If you’re encountering a runtime error, it might be due to a known issue already addressed in a newer program version. Check if there are any updates for the software you’re using.

You can usually find this option within the program’s menu under “Check for Updates,” or you might have a separate utility that manages updates for your applications. Alternatively, visit the program’s official website to download the latest version. After updating, restart the program to see if the runtime error is fixed.

4. Reinstall Visual C++ runtime

If your error message mentions Visual C++ runtime components, reinstalling Visual C++ might be the needed fix. Here’s how:

  1. Open the “Run” window by pressing the Windows key and R key simultaneously. Type “appwiz.cpl” and press “OK“.
    Type in "appwiz.cpl"
    Type “appwiz.cpl” in Run
  2. Look for the Microsoft Visual C++ programs in the list. Double-click to uninstall and follow the on-screen instructions.
    Uninstall Microsoft Visual C++ programs
    Uninstall Microsoft Visual C++ programs
  3. Download the latest version of Microsoft Visual C++ and follow the instructions to install it.

5. Run a virus scan

Sometimes, harmful software or viruses can sneak into your computer, altering or damaging files and causing runtime errors. To ensure this isn’t the problem, use an antivirus or antimalware program to scan your computer for harmful software.

6. Check for Corrupt Files

Occasionally, basic file data can become corrupted, causing runtime errors when important system or program files are affected. Use the built-in Windows System File Checker (SFC) tool to find and fix system file issues. Access it by:

  1. Find the Windows Command Prompt and run it as administrator.
    Windows Command Prompt
    Run Windows Command Prompt as administrator
  2. Type “sfc /scannow” in the command prompt and press Enter.
    Run SFC scan
    Run SFC scan

The PC will scan for corrupt or damaged files. This might take some time depending on the number of files.

In most cases, you’ll also find a “repair” option in the application’s installer. You can use this by running the installer again without removing the app first, often fixing any issues with the application’s files.

7. Run Windows in Safe Mode or perform a Clean Boot

If runtime errors occur due to driver issues or background programs, try using Safe Mode or performing a clean boot.

Safe Mode starts Windows with only essential drivers and services. If the problem doesn’t occur in Safe Mode, it likely involves a driver (which you might need to update) or a Windows service.

A clean boot is the opposite of Safe Mode. Instead of only loading essentials, it starts Windows but prevents third-party programs from launching automatically. If a clean boot stops runtime errors, a third-party app is likely causing the issue, which you may need to disable, update, or replace.

8. Run system restore

Using System Restore can fix runtime errors by reverting your computer to a previous state, especially if the error stems from a corrupted Windows Registry.

Run system restore

You can access System Restore from the Control Panel or by searching “System Restore” in Start. After using System Restore, try starting the program again to check if the error is resolved.

9. Reinstall Windows

If none of the solutions work, you might have to reinstall Windows. This step is recommended if the runtime error affects more than one program or causes widespread Windows issues. Remember, reinstalling Windows can resolve the problem, but you might lose important files, so back up essential data beforehand.

10. Seek outside help

If you’re stuck and can’t fix the runtime error yourself, it’s okay to ask for help. Consider contacting customer support depending on the error’s cause and the program involved. You’ll usually find contact information on the developer’s website or in the program’s instructions. Don’t hesitate to reach out when you need assistance.

How to prevent Runtime Errors in the future?

To prevent runtime errors in the future, consider these strategies:

  • Maintain updated software: Regularly update your operating system, drivers, and applications to fix known bugs and improve stability.
  • Practice good programming: If developing software, write clean, efficient code and perform thorough testing to minimize bugs and memory leaks.
  • Ensure adequate system resources: Keep hardware in good condition, ensuring sufficient memory and processing power for tasks.
  • Use reliable antivirus software: Protect your system from malware and viruses, which can cause runtime errors, using robust antivirus software and keeping it updated.

FAQs

Why am I getting a runtime error when opening a PDF in Internet Explorer?

This issue can happen for a few reasons. It’s often a C++ runtime error, especially when using Adobe programs like viewing PDFs. It usually happens when a special Adobe file that saves your personal settings gets lost or broken, causing you to lose the settings you had.

Is an infinite loop a runtime error?

Yes, it is. An infinite loop is a type of runtime error. It’s like a program getting stuck in a cycle, doing the same thing repeatedly without stopping. This endless repetition is a common way to spot a runtime error in your program.

Is it safe to ignore a runtime error?

Ignoring a runtime error can be risky. Even if it seems minor, it could be a sign of a bigger issue with your software or system. Ignoring errors might lead to more frequent crashes, data loss, or other disruptions. Investigating and fixing the error is best to ensure your system runs smoothly.

How do I know if a runtime error is serious?

It might not be serious if a runtime error happens just once or only with a specific program. If the error repeats frequently, causes your computer to freeze, crash, or results in data loss, it’s more serious. In such cases, it’s important to address the issue promptly by following troubleshooting steps or seeking professional help.

ABOUT THE AUTHOR

Khalid Ali


Khalid is a versatile analyst honing his expertise for the past 5 years. With certifications from Google and IBM to back him up, his knowledge extends far beyond the routine coverage of the latest trends and in the industry.